<template>
  <div class="login-container">
    <el-card class="login-card">
      <div class="logo-image">
        <img src="@/assets/login/login-pic.jpg" alt="" />
      </div>
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        auto-complete="on"
        label-position="left"
      >
        <div class="title-container">
          <h3 class="title">联动三微APP管理后台</h3>
        </div>

        <el-form-item prop="username">
          <span class="svg-container">
            <i class="el-icon-user-solid"></i>
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="Username"
            name="username"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>

        <el-form-item prop="password">
          <span class="svg-container">
            <i class="el-icon-lock"></i>
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            placeholder="Password"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon
              :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
            />
          </span>
        </el-form-item>
        <div style="display: flex">
          <el-form-item prop="yzm" class="yzm-ipt">
            <el-input
              placeholder="请输入验证码"
              v-model="loginForm.yzm"
            ></el-input>
          </el-form-item>
          <div style="border: none" @click="refreshCode">
            <s-Identify :identifyCode="identifyCode"></s-Identify>
          </div>
        </div>

        <el-button
          :loading="loading"
          type="primary"
          style="width: 100%; margin-top: 20px"
          @click.native.prevent="handleLogin"
          >登录</el-button
        >
      </el-form>
    </el-card>
  </div>
</template>

<script>
import { validUsername } from "@/utils/validate";
import SIdentify from "@/components/imgIdentify/index.vue";

export default {
  name: "Login",
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error("Please enter the correct user name"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error("The password can not be less than 6 digits"));
      } else {
        callback();
      }
    };
    // 图形验证
    const validateCode = (rule, value, callback) => {
      if (this.identifyCode !== value) {
        this.loginForm.code = "";
        this.refreshCode();
        callback(new Error("请输入正确的验证码"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "",
        password: "",
        yzm: "",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", validator: validateUsername },
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePassword },
        ],
        yzm: [{ required: true, trigger: "blur", validator: validateCode }],
      },
      loading: false,
      passwordType: "password",
      redirect: undefined,
      identifyCodes: "1234567890",
      identifyCode: "",
    };
  },
  components: {
    "s-Identify": SIdentify,
  },
  watch: {
    identifyCode(v) {
      this.isDebugLogin && (this.loginForm.code = v);
    },
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  methods: {
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    randomNum(min, max) {
      return Math.floor(Math.random() * (max - min) + min);
    },
    refreshCode() {
      this.identifyCode = "";
      this.makeCode(this.identifyCodes, 4);
    },
    makeCode(o, l) {
      for (let i = 0; i < l; i++) {
        this.identifyCode +=
          this.identifyCodes[this.randomNum(0, this.identifyCodes.length)];
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("user/login", {
              username: this.loginForm.username,
              password: this.loginForm.password,
            })
            .then(() => {
              this.$router.push({ path: this.redirect || "/" });
              this.$message.success("登录成功！");
              this.loading = false;
            })
            .catch(() => {
              this.loading = false;
            });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
  },
  mounted() {
    const self = this;
    self.makeCode(this.identifyCodes, 4);
  },
  created() {
    this.refreshCode();
  },
};
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #e5e5e5;
$light_gray: #000;
$cursor: #000;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #e5e5e5;
$dark_gray: #889aa4;
$light_gray: #eee;
.login-card {
  width: 1000px;
  height: 515px;
  position: relative;
  margin: auto;
  border-radius: 20px;
  box-sizing: border-box;
}
.login-container {
  min-height: 100%;
  width: 100%;
  // background-color: $bg;
  background: url(../../assets/login/login-bg.png) no-repeat;
  background-size: 100% 100%;
  overflow: hidden;

  .logo-image {
    img {
      width: 600px;
      height: 399px;
    }
  }

  .login-form {
    position: relative;
    width: 415px;
    margin-left: 10px;
    max-width: 100%;
    overflow: hidden;
    // margin: auto;
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 32px;
      // color: $light_gray;
      // margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: #000;
    cursor: pointer;
    user-select: none;
  }
  .yzm-ipt {
    width: 259px;
    margin-right: 10px;
  }
}
</style>
